{
  "manageEntity": {
    "action": "Save",
    "entityId": "88011",
    "entityType": "Track",
    "nonce": "0x916e3bcbea44a93fc8d462cf4f665e8dfce31ee4d6beaa54694bd9d4cd5b55de",
    "signature": "0x8f55c27931264f761b4a4703b0b539b3b6b4e6b418dba4e2f6ce8bda4e97c39a02a087bc63b55911bfbce092c502fb2d193f6b5bd6df657fdb35a28f042a127f1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}